The mod adds a functional jetpack to Los Santos in GTA V. Only the model is in the archive.
To install you will need: 1 - ASI Loader + ScripthookV (Alexander blade) 2 - ScripthookVDotNet (Crosire) 3 - Windows packages for ScripthookVDotNet.
Follow the link to download and install the script: http://gtaxscripting.blogspot.com/2015/06/gta-v-net-scripts-setup.html
Model setting: Using OpenIV find the x64g.rpf archive, navigate to levelsgta5genericcutsobjects.rpf and place the downloaded file p_d_scuba_tank_s.ydr replacing the original. Don't forget to make a backup copy of the original x64g.rpf file.
How to get a jetpack in the game: Now it's up to you to get a jetpack in the game. Launch GTA 5 single player mode and while in the game, press CTRL + N to bring up the menu. Select Jetpack mod and activate it. Next, you have to steal a jetpack from a military base, so arm yourself properly, find a good car, steal a jetpack and use it to your health!